Machine for producing spring dress-fasteners



K. G. BLOMBERG AND B. A. PETTERSSON.

MACHINE FOR PRODUCING SPRING DRESS FASTENERS.

APPLICATION men 0011?, 1519.

' Patented June 21, 1921.

4 SHEETS SHEET 1.

FIG. 1.

7Z4 W 3; M r.-

K. G. BLOMBERG AND B-A. PETTERSSON' MACHINE FOR PRODUCING SPRING DRESS FASTENERS. APPLICATION FILED ocnn, 191's.

1,3s2,463.- PatentedJune 21, 1921.

4 SHEETS-SHEET 2- \HVEHTOHS zwi K. G. BLOMBERG AND B. A. PETTERSSON.

MACHINE FOR PRODUCING SPRING DRESS FASTENERS. APPLICATION FILED OCT. 17. I919.

Patented J 11110 21, 1921,

4 SHEETS-SHEET 3- FIc I FIG.)

K fzw K. G. BLOMBERG AND B. A.'PETTERSSON.- MACHINE FOR PRODUCING SPRING omsss FASTENERS.

APPLICATION FILED OCT. I 7, I919.

Pafented June 21, 1921.

OFICE.

Kilns Gnsrnv BLGMBERG, or SGDERTALJE, Ann server nueusr rnrrnnsson, or Lrmrornve, swnnnn.

IVIACHINE FOR PRODUCING SPRING DBESS-FASTENERS Application filed Geto'ber 17, 1919.

I '0 all whom it may concern:

Be it known that we, KLAS GUsrAv BLOM- BERG, a subject of the King of Sweden, residing at sodertalje, in the Province of Stidermanland and Kingdom of Sweden, and Butter Auoosr PETTERSSON, a subject of the King of Sweden, residing at Lidkiiping, in the Province of Vistergtitland and Kingdom of Sweden, have invented new and useful Improvements in Machines for Producing Spring Dress-Fasteners, for which we have filed an application in Sweden on September 17, 1918, and of which the following is a specification.

The invention described in the following consists of an arrangement in connection with machines used in the production of dress fasteners, the particular purpose of the device being to cut out the top section of the fastener and to bend down the edge of same.

The constructional features of the invention are made clear in the annexed drawing, in which Figure 1 showsthe part of the machine which is used for stamping out and bending down edge of the top section of fastener from the side; Fig. 8 being a plan View, and Fig. 2 a vertical sectional drawing of same. Figs. 37 show five different positions of the tools used in the cutting-out and bending while in operation.

1', 2, and 3 are three concentric plungers guided in a tube or sleeve 6, which is fastened to a table 18. The plungers are each connected to one end of respectively levers 11, 12, and 13 which impart a reciprocating movement to the plungers. The opposite ends of levers 11 and 13 are provided with rollers 27 and 28 which are brought in contact with cams 15 and 17 by means of the springs 29 and 30 fastened to the levers; the cams being fitted on shaft 14 which latter during rotation produces the oscillating movement of the levers 11 and 13. The lever 12 obtains its oscillating motion from an eecentrie l6 fastened to the shaft 1 1, the eccen tric strap 31 of same being connected to the lever 12 by the rod 82.

The sleeve 6 which incases the plungers l, 2 and 3 is fitted in the upper end with a cutout pillow die 5 which acts in conjunction with a cut-out die a fitted to the plunger 1. A pillow die 8 is fitted above the cut-out die 5 and operates in conjunction with a drawing die 7 attached tothe plunger 2. On the center plunger 3 is a spring Specification oi Letters Patent.

Patented June 21, 1921.

Serial No. 331,515.

11 which forces up a pin 9, the function of which is to push off the fastener from the drawing die Between the sleeve 6 and the cut-out pil low die 5 is a space 83, (Fig. 3) provided for the metal strip 26 out of which the fasteners are to be cut.

Fitted to the sleeve 6 are scrap metal shears 19, 20 of which the lower blade 19 is fitted into the sleeve 6 and is adjustable in a vertical direction by means of wedge 34. The top blade of the shears 20 has one end movably attached to the sleeve 6 by means of a screw 35 and is carried in the other end by a guide 36. The top blade of the shears 20 is moved up and down by two collars 22, 23 which are fitted to a rod 21 placed on one side of the appliance and having a slid ing movement in a vertical direction.

On one side of the sleeve 6 is a trough or channel 2 1 which is attached to an arm 37 which is brought in contact with a cam 39 on the shaft 14 by means of a roller 38 whereby a reciprocating motion is imparted to the arm 37 and the channel 2% during the rotation of the shaft.

A hole 25 is provided in the table 18 and in the hole is fitted a scrap metal rake 10 which receives a vertical reciprocating motion from the arm 13 fitted to the rake.

The above described arrangement operates in the following manner, to wit:-

The metal strip 26 after having been pre viously treated in the press tool enters in the position shown in Fig. 8, with the knob that has been pressed into the strip directly over the opening of the sleeve 6, which incases the pluugers, and underneath the cutout pillow 5. The outside plunger 1 is thereupon moved upward and stamps out the fastener (Fig. 1). Immediately afterward the intermediate plunger 2 is moved upward with its drawing die 7 and carries the fastener to the pillow die 8 (Fig. 5) which has a taper hole and causes the edges of the fastener to be bent around the drawing die. Upon the fastener being removed from the drawing pillow die a pin 43 attached to a conveyer-which is more closely described in application No. 331,511 as pin 3-is in serted in the knob simultaneously with the center plunger rod being carried upward andthereby causing the fastener blank to be pushed 0d from the drawing die 7 by means of the push-off pin 9 fitted to the rod. The

scrap metal cut oil from the strip 26 by the tical reciprocating motion to the said plungers, a cutout die pillow (5) acting in conjunction with tut-out die (4)v fitted to the outside plunger (1) a drawing die pillow (8) acting in conjunction with drawing die (7) fitted to the intermediate plunger (2), a spring pushptl pin (9) fitted to the center plunger With the object of pushing the fastener blank (40) off the drawing die KLAS GUSTAV BLUMBERG. BENGT AUGUST PETTERSSON. 

